Crashes after a few seconds

[roger-]

Which version are you using?

v0.20.2

Which operating system are you using?

Raspberry Pi OS
Linux raspberrypi4 5.15.61-v8+

• Linux amd64 standard
• Linux amd64 Docker
• Linux arm64 standard
• Linux arm64 Docker
• Linux arm7 standard
• Linux arm7 Docker
• Linux arm6 standard
• Linux arm6 Docker
• Windows amd64 standard
• Windows amd64 Docker (WSL backend)
• macOS amd64 standard
• macOS amd64 Docker
• Other (please describe)

Describe the issue

I'm converting an mjpeg stream to h264 (h264_v4l2m2m encoder) as a Raspberry Pi 4 using ffmpeg (ffmpeg version 4.3.4-0+deb11u1+rpt3) and publishing to rtsp-simple-server using the command:

INPUT_OPTS=" -loglevel debug -reconnect_delay_max 10 -hide_banner -avoid_negative_ts make_zero -fflags nobuffer -flags low_delay -strict experimental -fflags +genpts+discardcorrupt -use_wallclock_as_timestamps 1 -f mjpeg -re"
OUTPUT_OPTS="-an -c:v h264_v4l2m2m -g 20 -pix_fmt yuv420p -vsync 2 -b:v 900K -maxrate 1M  -f rtsp -rtsp_transport tcp -force_key_frames 'expr:gte(t,n_forced*2)' -r 10"

ffmpeg $INPUT_OPTS -i $URL $OUTPUT_OPTS  $RTSP_SERVER"

It seems to run for a few seconds but then rtsp-simple-server crashes with the log below.

Describe how to replicate the issue

Run command above

Did you attach the server logs?

yes

panic: runtime error: index out of range [0] with length 0

goroutine 89 [running]:
github.com/aler9/rtsp-simple-server/internal/hls.(*muxerVariantMPEGTSSegmenter).writeH264(0x400046f698?, {0x99510?, 0xc79c39bbfb7?, 0xcb8260?}, 0x116a9bed0068dc80?, {0x40004e2d70?, 0x400046f6a8?, 0x5bd15c?})
        /s/internal/hls/muxer_variant_mpegts_segmenter.go:64 +0x47c
github.com/aler9/rtsp-simple-server/internal/hls.(*muxerVariantMPEGTS).writeH264(0x4000122b00?, {0x0?, 0x0?, 0xcb8260?}, 0x0?, {0x40004e2d70?, 0x0?, 0x0?})
        /s/internal/hls/muxer_variant_mpegts.go:43 +0x2c
github.com/aler9/rtsp-simple-server/internal/hls.(*Muxer).WriteH264(...)
        /s/internal/hls/muxer.go:81
github.com/aler9/rtsp-simple-server/internal/core.(*hlsMuxer).runWriter(0x40003f9680, 0x4000248780, 0x0, 0x0, 0xffffffffffffffff)
        /s/internal/core/hls_muxer.go:419 +0x180
github.com/aler9/rtsp-simple-server/internal/core.(*hlsMuxer).runInner.func2()
        /s/internal/core/hls_muxer.go:356 +0x3c
created by github.com/aler9/rtsp-simple-server/internal/core.(*hlsMuxer).runInner
        /s/internal/core/hls_muxer.go:355 +0x5dc

Did you attach a network dump?

no

EDIT: this issue actually only happens with the stock ffmpeg 4.3.4, using a new build of ffmpeg 5 from here (e.g. ffmpeg version N-60837-ge81242bb13-static), things seems to be fine.

[aler9]

duplicate of #1155

[github-actions]

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